Fever
Fever is a body temperature above 38 °C. It usually reflects a normal immune response to a viral or bacterial infection. In healthy adults, isolated well-tolerated fever does not require an emergency: monitor, hydrate and rest for 48 to 72 hours before consulting.
When to worry
- Fever > 39 °C lasting beyond 48 h despite paracetamol
- Stiff neck, light sensitivity, purple spots that don't fade under pressure
- Confusion, unusual drowsiness, seizures
- Breathing difficulty, chest pain
- Infant < 3 months or immunocompromised person
- Pregnant woman with fever > 38.5 °C
Self-care at home
Rest, drink regularly (water, broth, herbal tea) to compensate for sweat losses. Dress lightly instead of piling on blankets. Paracetamol (1 g every 6 h in adults, weight-adjusted dose in children) remains the symptomatic reference treatment; avoid aspirin in children and limit ibuprofen in chickenpox or dehydration. Monitor temperature 2–3 times a day, plus any new symptom: skin rash, localized pain, repeated vomiting.
When to consult your doctor
A consultation is advised if the fever lasts more than 48 h without an obvious cause, is associated with prolonged loss of appetite, localized pain (ear, throat, urine, joints) or a skin rash. Patients of Maison Médicale Parc Astrid: book online or call us during opening hours. Outside these hours, call 112 for life-threatening emergencies or head to the nearest ER.
Unsure? Call reception and we will guide you.
Call the clinic · +32 2 520 25 52FAQ
From what temperature is it considered a fever?
It is considered fever from 38 °C rectally or tympanically, and 37.8 °C axillary.
Should fever always be lowered?
No. Fever helps the body fight infection. Treat only if poorly tolerated (pain, marked discomfort) or above 39 °C in adults.
When call 112 instead of your doctor?
If you have stiff neck, purple spots, confusion, seizures, severe breathing difficulty, or an infant < 3 months.
Sources
· Reviewed by Dr. Selim Zengin, general practitioner.